Braidwood Refractories Ltd, Carluke, South Lanarkshire
— 09/01/2019Bonnybridge Silica and Fireclay Company (Bonnybridge Refractories) were always trying to improve the refractory brick manufacturing process. Mr Walter Smith of Braidwood patented a process involving the carbonising of clay. This involved changing the chemical makeup of the fire clay by heating it to change the iron into magnetite which could then be removed via…